Question

2000 Volkswagen Jetta 2.0L with engine codes P0740 and P0785, it won't shift speeds

Answer 1

P0740 Torque convertor clutch circuit / open

P0785 Shift timing solenoid

The connection going into the transmission, check the connection for proper installation , if this is okay the valve body with the solenoid will require replacement

Answer 2

P0740 VOLKSWAGEN Code - Torque Converter Clutch Circuit Malfunction
Read more: https://www.autocodes.com/p0740_volkswagen.html

P0785 VOLKSWAGEN Code - Shift/Timing Solenoid Malfunction
Read more: https://www.autocodes.com/p0785_volkswagen.html